Lubricator



May 20, 1930.v R. c. osGooD LUBRICATOR Filed OG'b. l, 1921 Patented May 20, 1930 UNITED STA TES PATE-NT 'o1=i=,1'c :r.

ROBERT c. oseoon, E cLAEEMoN'r, NEW HAMPSHIRE, AssrGNoR 'ro SULLIVAN MACHINERY COMPANY, A coEPoEA'rI'oN or MAssAcHUsE'r'rsj LUBEIGATOR Application filedV October 1, 1921.. Seria1 No.y504,800.

My invention relates tov lubricators. An object of my invention is to provide an improved lubricator. .Another object of my invent-ion is `to" provide an improved autoy matic lubricator. lA further object of my invention is lto provide an improved lubricator automatically operative to initiate and discontinue lubrication with the starting and stopping of the mechanism arranged to be i0 lubricated thereby. Astill further object of myinvention is to provide an automatically controlled pressure fluid governed gravity feed lubricator. Other objects of my invention will hereinafter more fully appear.

In the accompanying drawings I have shown for purposes of illustration one'form which my invention may assume in practice. In these drawings,-

` F ig. 1 is a central vertical section through the illustrative embodiment ofiny invention.

Fig. 2 is a transverse horizontal section on a plane corresponding to the line 2 2 lof Fig. 1. v

In this illustrative form of myinvention I have disclosed an embodiment thereof adapted forconnection to any passage to which pressure fluid is supplied during the operation of the mechanism to which the lubricator is adapted to supply lubricant. Such a passage is generally indicated at 1 in the accompanying drawings. Threaded into the top of this passage is a casing 2'having a lubricant storage chamber 3 within the same and communicating with said passage 1 by a continuously open passage 4 formed in a wall of the casing 2 and opening into the lubricant ,reservoir 3 adjacent its top. A second passage 5 extends between the interior of the casing 2 and the passage 1 and is controlled by a valve 6. The valve 6 is hemispherical at its lower extremity and is adapted4 to fit in a conical depression 7 .forming the inlet to the passage 5. f i f For the purpose of automatically opening the valve 6 at such'times aspressure is admitted to the passage 1 I have provided a piston 8 reciprocable in a bore 9 formed in a depending extension on the lubricant chamber closure member 10, the valve 6 being attached to the piston by suitable means, herein 'designated generally 11, which will permit it a limited lateral freedom of movement relativetov its scatto insure an arcuate seating. .A spring `12 is arranged ina chamber 13 constituting an enlargement of the'bore 9 in which'the piston 8 reciprocates and is maintained under pressure byv a removable threaded member 14. It will be understood that the piston 8 is a ground fit ,for the cylinder 9, etc.r and that accordingly there is substantially no leakage of lubricant past the piston. In order to vent the upperend of the chamber 13 laterally extending vent passages 15 are provided.

. The mode of operation of this'mechanism will be readily apparent. As soon as pressure is admitted to the chamber or passage '1 it passes by way of passage 4to the upper 'end of lubricant receptacle 2 wherein it,l acts upon thesurface ofthe lubricant. Ihe pressure transmitted toy the lubricant inaccordance with-well known'physicallaws is transmitted tothe lower surface 8a of the piston 8,

and as the pressures acting on the 'valve' 6 practically neutralize each other, the unbalanced liquidpressure on the piston S'unseats the valves 6. It will beunderstood that the valve vG willbemaintained'open as long as pressureis supplied to the chamber 1 and it vwill further be understood that the lubricant being subjected to equal pressures upon its 'upper and lower surfaceswill Ydrip gradually into the passage 5 and so into'the passage Vway or chamberl and be carriedv by the rush of pressure or otherwise to thev surfaces tobe lubricated. Y Y f y While I have inthis application specifically described one form which my invention may assume in practice, it will'be understood that 'this formiof the same is shown for'purposes into said chamber comprising a lubricant res- Y so ervoir, a passage for establishing communication between said chamber -andsaid resoutlet, and means presenting'an unbalanced y which pressure fluid may be supplied lto a` ervoir .to place-the lubricant in said reservoir Vunder normally constant pressure, an outlet for lubricant from said reservoir to said chamber, a valve for controllingr'said area subjected `to said normally constant pressure in said reservoir for automatically holding said valve opjen when Apressure fluid is being suppliedto said Chamber.

chamber and the top of saidreservoir, anV Youtlet for lubricant yfrom said reservoir to j said chamber, a valve in said reservoir for controlling said outlet, and'means presenting an unbalanced area subjected to normally constant pressure 1n said reservoir for automatically moving said valve to open position and holding the same in such position constantly while pressure fluid is being suppliedV through said Vchamber to said mechanism. Y Y.

3. In combination, a chamber in communication with a motiveiluid supply passage, a lubricating Vdevice for feeding lubriy I p cant intoV saidfpassage comprising a lubricant reservoir, means providing a passage Afor con- `stantly placing saidreservoir yunder the pressure of fluidin said supplypassa'ge, an out- Vlet for'lubricant` from said reservoir to said chamber, a valve in ksaid reservoir for conmmally constant pressure in said reservoir,

trollingsaid outlet, and a vpressureresponsive device connect-,ed to said Yvalve and having anunbalanced area subjected tothe norsaiddevice being disposed within VVsaid res- .ervoirfandautomatically operable tohold vsaid valve in-open position constantlyV While motive fluid lis being supplied through said first mentioned passager;

5. In combination, a V*chamber through which motiveluid maybe supplied to a mechanism to be lubricated, a lubricating device for feeding lubricant into said passager.'

comprising a lubricant reservoir, meansproviding a passage for establishing constant Y communication betweensaidchamber and the top of said reservoir, an outlet for lubricantfrom said reservoir-to said chamber,a1

'.guiderwithin said reservoir, a plunger slidable 1n said guide and havlng-one side ex- Y posed to theV pressure in said reservoir andV Y the other side exposed to atmospheric ,fpres- 'Y sure, and a valve orcontrolling said outletV connected to said plunger whereby said valve is held constantlyopen `by hydrostatic pressurein said reservoir when motive fluid is supplied through said chamber.

6. In alubricating device, the construction asset fort-h in claim 5 whereinfsaidY guide comprises a boss depending into said reser- Y voir and having alongitudinal lboretherein vIntestimony whereof I aiix my signature.

' VROBERT C. OSGOOZD.

4.111 combination, aV chamber through i- Which motive fluidv maybesupplied to aV l mechanism to lbe lubricated, a lubricating device :for feedinglubricant into said chamber comprising a lubricantY reservoir, means pro'-` f viding constant communication'between said i Ychamber and the top ofjsaid reservoir, an Y outlet for lubricant .from said reservoir to 55 `said chamber, a valve in said reservoir forl controlling said outlet, a piston connected'to said valve andhavingonl'y one side lexposed to pre'ss'ure'in'said reservoir, and aspring acting onfsaid'pistonV in'opposit'ion to the pressurein said reservoir and vtending to hold Y said valve normally Vclosed,said`spring being Ydesigned'to permit pressure insaid reservoir vto hold said Valvev open yconstantly while motive Yfluid is supplied throughY said chamber. v Y 

